|
|
|
Who's Online
There currently are 6002 guests online. |
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
I received a good service manual, with good resolution. Improve the instructions for the purchase because they are not well understood.
For the rest, so good.
Thanks Angel.
;
Very good documentation for the Grundig 2077 model (as well as similar 800/900/1000 series radios). The first two pages are a summary of reception specifications and output capability. The third page is the tuner dial indicator and dial cord routing diagram. the final ~5 pages are the schematics for the various models (including 2077). The scan quality of the schematics are good, adn can be easily read if zoomed in. The documents are in German, not English as stated. It would have been nice to have the tuning sequence and settings, and some trouble shooting materials... or component and wiring map.
 ;
Perfect like it was descriped, Perfect like it was descriped
;
Very good detail, all pages clear, exactly what I needed
;
Excellent service, and just what I needed to service my TU-7700. All pages of the manual are clear and easily readable.
FM(TU101) TROUBLESHOOTING
Check the 10V input of TU101 Pin 6
YES
Check the 10V of Q102 "E" YES NO
Check the Power circuit
Check the "High" of TU101 Pin5
Check the "LOW" of IC103 pin7
YES
NO
YES
NO
Refer to "IC103 Troubleshooting"
Replace the Q102
Check the OSC waveform of TU101 pin8 YES NO
Refer the TU101
Refer to "IC102 Troubleshooting"
IC 102 TROUBLESHOOTING
Check the Power input of IC102 pin8 YES NO
IC903,D105,D106 Check
Check the waveform of IC102 pin20, 21
YES
NO
Check the FM(TU101) ,AM(L102)
YES
Replace the IC102 Check the waveform of IC102 pin16, 17
YES
NO
Check the "LOW" of IC102 pin13 Refer to "IC103 Troubleshooting"
YES
END
NO
Replace the IC103
- 2-10 -
|
|
|
> |
|
